Dies for forming leggings



Patented Get. 14, 1924.

ita

GEORGE W. CUIVIING, OF NEW YORK, N. Y., ASSIGNOR TO M. A. CUMING 8t (30., INC., 015

NEW YORK, N. Y., A CGRPORATION F YORK.

DIES FOR FORMING LEGGINGS.

Application filed March 2, 1923. Serial No. 622,427.

To all whom it may concern:

Be it known that I, GEORGE W. (Joanne, a citizen of the United States, and resident of New York city, in the county of New York and State of New York, have invented certain new and useful Improvements in Dies for Forming Leggings, of which the following is a full, clear, and concise description.

My invention relates to dies for forming leggings, and particularly leggings made of leather. It isa fact well known in this art, that in the manufacture of leather leggings the leather used as stock is seldom or never uniform in thickness. If a number of blanks be cut out of pieces of leather which have been previously assorted as to size and thickness, it will be found that these blanks dlfier from each other greatly in thickness and that even in the same individual blank, no matter how carefully selected, the leather will be substantially thicker in one portion than another.

Owing to the lack of uniformity in the thickness of the leather and of the blanks made therefrom as just pointed out, there arises in the manufacture of leather leggings various difficulties. For instance if in a particular blank the leather happens to be 0 thin at one point and thicker at another, the finished legging made from this blank 1s apt to appear somewhat distorted, or to show a bump or a flat surface where none should appear. These and other defects of the same general kind often cause the finished leggings to present an appearance suggest ve of inferiority and cheapness and thus m1l1- tating against sale of the leggings, or at least tending to lower the prices at which they can be sold.

lVhat I seek by my invention to do, therefore, is in forming the blanks into leggings, to give the outside of the blank a predetermined ideal shape, so that the inside of the blank will carry all of the distortions, irregularities and defects due to differences in the thickness of the leather of the blank. By doing this, the various undesirable eflects wrought by the differences in thickness of difi'erent portions of the blank are effectively concealed, in that they are so located and arranged as to render them invislble to persons looking at the outer surfaces of the leggings, as worn in actual practice.

Following this idea, I employ two dies,

one known as the outer die and the other as the inner die, the outer die being provided with a metallic operating face of proper conformity to confer a predetermined ideal shape upon the outside of the legging blank, the inner die being provided with a facing of thick rubber or other resilient material; and in connectionwith the inner die I use means for distending this rubber facing under pressure of a liquid or gaseous medium, so as to firmly press the leather blank outwardly against the operating face of the outer die. By this arrangement, it follows that in the finished legging the outer surface thereof is substantially ideal in form, this result being gained at the sacrifice of the form given to the inner surface of the legging.

By constructing and operating the dies as just indicated I accomplish another result which is quite desirable, and that is, to cause the pressure applied to the blank to be distributed with substantial uniformity throughout the entire area of the blank.

In addition by my invention I seek, by distributing the pressure applied to the blank, to prevent injury to the material used, and also to prevent the formation of wrinkles and creases in the blank, as the same is formed into the finished legging. Reference is made to the accompanying drawing forming a part of this specification, and in which like reference characters indicate like parts throughout the several figures. Figure l is a substantially vertical section through a pair of dies made in accordance with my invention.

Figure 2 isa side elevation of the mech anism shown in Figure 1. Figure 8 is anend view,.partly in section and partly in elevation, the mechanism shown in Figure 1.

A cap plate t is mounted upon posts 5, four in number, and secured firmly thereto, For this purpose each post 5 is provided 1 with a threaded end portion 6, which extends through an eye? with which the cap plate is provided, and nuts 8 and 9 are revolubly mounted upon the threaded portions 6 and jammed against the eyes 7.

The outer die appears at 10 and engages a pair of cross beams 11. This carries a bolt 12 extending upwardly through a hole in the cap plate 4, and also through a beam 13 a resting upon. the-cap .platewiAenutwl l en.-

gages thei upperend of the bolt-7:123;Theidie 10 carries a heat 'cl'evice,'consisting in this.

' instanceof a gas pipe.v.l5, i held upon the-die.-

pipe thus provided with burner holes anuniw ber of gas flames 18 are caused-to heat the die member, in the usual .or anyigdesired=- V The' dieilO is rather massive. r-iltsigeneral foiin may be understood"fromel liguresfil and 3. The op-= f' ablez relatively to the 'die' 10.

defineclroughlyias saddle shaped', as:-may be eratingiiface of the die appears at 1'7, and is given such form thatiwhen .the leather blanle is forced: againsta it (Isl-elsewhere explained, the'ioutensurface ofcsuchblanlc is given a predetermined idealforinxr i A followerplate appears at':18 and is providedwwith :four-eyes 19, serving-1 as bearings I I and:enci-rcling theil'posts 5,-so thatjrthe fol-" lower-L'plate is .slidable irelatively to these postsaanol: to the" cap =plate:4, and thus mow 7 IVIOlUflQd -HPOILHIB followerzplate area -p-airofwcross beamsa20. :i Engaging the 1111-4 1 der side of the follower plate is anothercross Detach'ably fitteduponthe crossbeains 20' is a shoe 22',-provicledwith a -pair-ofupturned edge portions 23,as'sho wn =more particularly 1 v 7 in Figureiii; The 'shoe -23 carries a bolt 24zwhich exten ds downwardlythrough the cap plate lfipand the beam 21,;and is detaehably engaged: byza nut unscrewingthenutx25 "ranllfiitlifls i:disengaging it from the i bolti24a, the shoezi22fimaya beraised directly upward; carryinglithe ubolt 2 1 Jwit'lr it,: the a shoe and boltbei'nglthusasa unit removablei lvlountedeuponsthe shoer-22 is a core-26,

niade 'o'f'anetal A andxthaving a general eon-tour L s so shape; which externally sis closely-flanalogous to that'zpof thefe-ore 26 The former-x30 in :'closes and completely envelopsitheicore i26,

' and i s-provided witlrza pair-70f:v oppositely disp osedi aflanges portions 31,. extending: .qtQ-n 1 housed 'rwith in the" rubber -formen 30, the? 1 flangeg-gport-ions 27 at the .coresrestr directly:

[ upon sitheizirubbei v: flange ezportions F3151 The "rubbers formen=:- is :further e provided; witht'; heads 32 and 33 integraluwithzit,ias.may be., understood fromiFigure Bolts 34L; extend through holesrinithe shoe 22zandefianges' 31.1.

and 27,w-and aregengagedeby'znutsa35iv:-En-g gagingieth'eiiheads's32 and 33 V: are end :plates :1

zis made entirelyi of- 'inetahand understood from Figure 1.

A'leather blank to be formed into a legging is shown at 37,- andi is adapted-to restupon the rubber former 30. 1 In the particular: lblank here shown the inner :surface has -irregularities,shown:at 37:; A pipe 38 extend-s :upwardly througlrthe shoe 22 and core 26. This pipeis provided witha hand" valve 39,andwith a portion 38 havingsufiicient- .iflexibility-xto allow for vertical movement of the follower plate 18, andthe lower die-,1 which is carried thereby.

" Thezfollower plate 18 carries: an extending memberA0,:sandpivotedtothis is a link 41. v A flexible connection;12, which may. be a cable .or' a rope, is connected with thelink 4:1 and witlra rockingpulley 43,'this rock-.- ing:.piillegy' 'zbeing journaled upon the cap: plate 4, and thus:supportecleby :the framework'hsA fiefxibleeonnectionea, such as a rope.:or cab1e,iis connected with the rocking: pulley -43 and is used for actuatingthe same. This rockingrrpulley '43 land parts immedi-L ately associated therewith: are employed in connection with the raising and lowerirw of therfollowereplate: 18,1 and: are thus useduin actuating the lower diewSince', h'owever, the raising and IOWVBl'lHgM-Qf one: die member:-

relatively ito the'other is a feature old in the art', the particular mechanism used fOPthlSk purpose is not essential to my invention. w

The. upper die being heated; for instance 1 by: gas as ab one described and as :here shown, and 1a blank. 37 w-being': properly *:1'noisteuedand-laid upon theilower die so as to engage the :1 formerl 30,4: the follower plate 18 1 is raisedyand-then compressed airtor' other. fluid, supplied thronghzthe; pipes '38? and 38, is admitted between the i core 26 "and the former 30. This distends the, former 30, so as::.-to force -it houtwardlyi The rubber former, thus distended, bykits= pressure against; thecblank 37 *forces this blank tightly-against the operating-face 20ftl1e upper rdie,=so as to give shapeto theileather c blankum The :net; result is that itheaifinished 1 legging i is ;i11"-.Lou-teit.' appearancesv substantially; per'--' "feet as to form, anyxunevenness :due to dif.-: ferences in l thiiclmess of the/ stock material at idiffenenta pointsi'rbeing. :taken: care ofnby theicontour conferred upon theiinniensui'facei of the i legging; Therefor e i if 12, particular portion 50f :thei leather 2 blank happens 4 to (be 1 thick as icomp aredl -r with 5 anotheni portion n thereof, thew-differences iirthickness areinot apparentsto the :eye of :the observer-if he looks, as he usually does, only at the outside of the finished legging.

The operation of my device is as follows:

The lower die being operated as above described, and the leather blanks used as stock being rested in position, pressed as above described, and removed by hand one at a time, the leather blanks are converted into finished leggings, any holes required for use in connection with fastenings being made in any appropriate manner.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is as follows:

1. A device of the character described, comprising an outer die provided with an operating face of proper configuration to form the outer surface of a legging, and an inner die movable relatively to said outer die, andcomprising a hollow core and a rubher former fitted upon said hollow core, said core and said former having such configuration that the outer surface of said former mates the operating face of said first men tioned die, and means for supplying a medium under pressure between said core and said rubber former, for the purpose of distending said rubber former.

2. A device of the character described, comprising an outer die and an inner die movable relatively to said outer die, said out; or die having an operating face conforming substantially to the ideal shape required. for the outer surface of a legging, said inner die comprising a core and a rubber former carried by said core, said core and said rubber former each having a conformity substantially mating the conformity of the operating face of said upper die, and a pipe extending through sald core and into proximity to said rubber former carried thereby, for the purpose of discharging in between said core and said rubber former a medium under pressure in order to distend said rubber former.

3. A device of the character described, comprising an outer die member provided with an operating face of suitable shape to form the outer surface of a legging, an inner die provided with an outer face of proper conformity to form the inner surface of said legging, said inner die being further provided with a rubber former, and means for forcing in between said inner die and said rubber former a medium under pres sure, for the purpose of distending said rubber former.

4. The combination of a fixed die, a

framework supporting the same, a follower plate mounted upon said framework and movable relatively to said framework and to said fixed die, a second die mounted upon said follower plate and movable therewith, said second mentioned die comprising a shoe provided with flange portions, a rubber former carried by said shoe and engaging said flange portions, said rubber former being provided with a pair of oppositely disposed flange portions extending toward each other, and a hollow core enclosed within said rubber former and provided with a pair of oppositely disposed flange portions extending toward each other and resting upon said pair of flange portions of said rubber former, bolts extending through said shoe and through said flange portions of said rubber former and said flange portions of said core, and means for forcing between said core and said rubber former a medium under pressure, for the purpose of dis tending said rubber former.

5. A device of the character described comprising a frame, a die supported. thereupon, a follower plate supported by said frame and movable relatively to said die, a shoe carried by said follower plate, a rubber former provided with a pair of oppositely disposed flange portions engaging said shoe and extending toward each other, said rubber former being hollow, a hollow core enclosed within said rubber former and provided with flanges, fastening members engaging said shoe and also engaging the flanges of said rubber former and the flanges of said hollow core for the purpose of holding said shoe and said core together, and means for forcing in between said hollow core and said rubber former a medium under pressure, for the purpose of distending said hollow former.

6. A device of the character described comprising an outer die member provided with an operating face of suitable shape to form the outer surface of a legging, a follower plate movable relatively to said die, a shoe oarired by said follower plate, a hollow core and a hollow rubber former cari ried by said shoe said hollow former enclosing said hollow core, said hollow former and said hollow core having together a comformity suitable for forming the inner surface of a legging.

Signed at New York city, in the county of New York and State of New York, this 28th day of February, 1923. a

' GEORGE W. CUMING. 

